That would depend upon your application, your long term support needs, whether you need a widely available database which is hosted by multiple providers, whether you need a feature that isn’t available elsewhere etc.

Otherwise it’s a bit like asking “what type of rope should I use for my application?” Are you mountaineering or tying your boat to a dock?

Is this “support” in the sense of “can this sequence of code points be rendered correctly to the screen”?

OS and font dependent.